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Finding the Fourth Proportional to 85,497.18, 128,269.35 and 35,600.70

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Solution

The fourth proportional to 85,497.18, 128,269.35 and 35,600.70 is: 53,410.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,497.18 : 128,269.35 = 35,600.70 : x
  2. Step 2: Convert to fraction form
    85,497.18/128,269.35 = 35,600.70/x
  3. Step 3: Cross multiply
    85,497.18x = 128,269.35 × 35,600.70
  4. Step 4: Simplify right side
    85,497.18x = 4,566,478,648.55
  5. Step 5: Solve for x
    x = 4,566,478,648.55/85,497.18
  6. Step 6: Final answer
    x = 53,410.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.